Information about Time Zones and daylight saving.

User crosses various timezones; uses Control Panel to change the
timezone upon arrival.

Windows 95 - System will alter the offset from UTC. System clock is
unchanged. Displayed time will NOT be changed.
Windows NT - System will alter the offset from UTC. System clock is
unchanged. Displayed date/time WILL change.

A user arrives the morning of a Daylight Savings Period transition.
If the "Automatically Adjust For Daylight Saving Time" checkbox
HAS been enabled

Windows 95 - System will alter the offset from UTC. System clock will be
changed. Displayed clock time will change.
Windows NT - System will alter the offset from UTC. System clock is
unchanged. Displayed clock time will change.

If the "Automatically Adjust for Daylight Saving Time"
checkbox has NOT been enabled

Windows 95 - System WILL alter the offset from UTC. System clock is
unchanged. Displayed clock time will NOT be changed.
Windows NT - System will NOT alter the offset from UTC. System clock is
unchanged. Displayed clock time will NOT be changed. If an NT user now
manually alters the system clock to show the 'true' time, the UTC time is
incorrect and any 'export' of time-data from this system will be
incorrect.

At some time/day within a Daylight Savings Period, if the user
alters the "Automatically Adjust For Daylight Saving Time"

Windows 95 - System will NOT alter the UTC offset. System clock is
unchanged. Displayed clock time will NOT be changed. Windows NT - System WILL alter the UTC offset. System clock is unchanged.
Displayed clock time WILL be changed.